My compatriot Chris Gibson highlighted a great performance tuning attribute for Fibre Channel adapters in this blog post . I was so excited that I dusted off my blog-writing skills (much neglected) and got fired up enough to put Chris' advice...

I received the following
question from an AIX administrator in Germany. “ Hi Chris, on your blog, you explain how to find out the active value
of num_cmd_elems of an fc-adapter by using the kdb. So you can
decide, if the value of lsattr is active or not...

This entry is
similar in theme to one of my previous posts about verifying your hdisk queue_depth settings with kdb . This time we want to check if an attribute for a Virtual FC (VFC)
adapter has been modified and whether or not AIX has been restarted since...

I came across this table in the Redbook Best Practices for DB2 on AIX 6.1 for POWER System .
It shows a list of the common parameters you need to look at for disks when they are connecting to a SAN. Tasks Actions to undertake Remarks For details see LUN...